Nanostructured materials for solar energy conversion

Oelhafen, P.; Schüler, Andreas

doi:10.1016/j.solener.2004.11.004

Cited by 161 publications

(49 citation statements)

References 51 publications

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“…However, no single material in nature can meet these criteria. As such, there is a need to optimize the optical and structural properties of a surface through the use of a combination of materials, the modification of the surface, or the synthesis of multilayer solar absorber materials to achieve the desired wavelength selectivity [8,9]. Such surfaces are called solar selective absorber (SSA) surfaces.…”

Section: Introductionmentioning

confidence: 99%

“…Some well-known examples include electroplated black chrome (Cr-Cr 2 O 3 ) and nickel-pigmented anodic Al 2 O 3 (synthesized via the electroplating/electrochemical method) as well as evaporated titanium nitride film (TiNO x ) and nickel-nickel oxide (Ni-NiO x ) (synthesized via a vacuum deposition/sputtering method) [9,22,[28][29][30][31][32][33].…”

Section: Introductionmentioning

confidence: 99%

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Developments in the synthesis of flat plate solar selective absorber materials via sol–gel methods: A review

Amri

Jiang

Pryor

et al. 2014

Renewable and Sustainable Energy Reviews

143

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Developments in the synthesis of flat plate solar selective absorber materials via sol–gel methods: A review

Amri

Jiang

Pryor

et al. 2014

Renewable and Sustainable Energy Reviews

143

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“…Quantum dots are considered as promising candidates for optoelectronic applications including lightemitting diodes (Tasco et al, 2004) and quantum dot lasers (Darugar et al, 2006). Various concepts have been proposed for the use of nanostructured materials in solar energy conversion (Oelhafen and Schü ler, 2005). Quantum dots might be used as frequency converters to better match the spectrum of the incoming radiation to the spectral efficiency of the solar cell (Van Sark et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

Quantum dot containing nanocomposite thin films for photoluminescent solar concentrators

et al. 2007

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Silicon oxide films containing CdS quantum dots have been deposited on glass substrates by a sol-gel dip-coating process. Hereby the CdS nanocrystals are grown during the thermal annealing step following the dip-coating procedure. Total hemispherical transmittance and reflectance measurements were carried out by means of a spectrophotometer coupled to an integrating sphere. For CdS-rich films, an absorption edge at photon energies in the vicinity of the band gap value of bulk CdS is observed. For lower CdS concentrations, the absorption edge shifts to higher photon energies, as expected for increasing quantum confinement. The samples show visible photoluminescence which is concentrated by total internal reflection and emitted at the edges of the substrate. The edge emission has been characterized by angle-dependent photoluminescent (PL) spectroscopy. Information on the lateral energy transport within the sample can be extracted from spectra obtained under spatial variation of the spot of excitation. The color of the photoluminescence can be tuned by varying the annealing temperature which governs crystal growth and thus the cluster size distribution. The characteristic features observed in the PL spectra clearly exhibit a blueshift for lower annealing temperatures, confirming the presence of quantum size effects.Advantages of the proposed concept of quantum dot containing coatings on glass panes for photoluminescent solar concentrators are the high potential for low-cost fabrication on the large scale and the suitability for architectural integration.

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“…The underlying metal surface contributes with a low thermal emittance for in-service temperatures of the solar collector. In turn, solar absorbing coating formation is a key step for photo-thermal conversion in a simple and reproducible way in solar collectors [2][3][4][5]. Furthermore, particle-size in the absorbing layer plays crucial role in achieving optimal spectral selectivity.…”

Section: Introductionmentioning

confidence: 99%

Coatings of Fe3O4 Nanoparticles as Selective Solar Absorber

González¹,

Barrera-Calva

Huerta³

et al. 2011

TOSURSJ

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Cost-effective and pollution-free green chemical method has been employed for synthesizing Fe 3 O 4 nanoparticles which can be used as a solar absorbent and characterized further for their structural, optical and morphological properties using X-ray diffraction and UV-VIS-IR spectrophotometry and transmission electron microscopy techniques, respectively. Presence of Fe 2+ and Fe 3+ in nanoparticles is confirmed from the X-ray photoelectron spectroscopy analysis. The nanometric grain-size allows deposition of thin films, and the resulting coatings onto copper substrate show a relatively low thermal emittance in a range of 0.05-0.10. The solar absorptance values are between 0.76 and 0.85, which can provide an acceptable selectivity. Attempt is also made to find influence of the thickness effect on the selectivity having 15.2 as best value for one layer coating.

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Nanostructured materials for solar energy conversion

Cited by 161 publications

References 51 publications

Developments in the synthesis of flat plate solar selective absorber materials via sol–gel methods: A review

Developments in the synthesis of flat plate solar selective absorber materials via sol–gel methods: A review

Quantum dot containing nanocomposite thin films for photoluminescent solar concentrators

Coatings of Fe3O4 Nanoparticles as Selective Solar Absorber

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